CDLL4743C

Single Zener Diodes Overview

The CDLL4743C is a single Zener diode manufactured by Microchip Technology, designed for surface-mount applications in the DO-213AB (MELF) package. It features a nominal Zener voltage of 13 V with a tight tolerance of ±2%. The device supports a power dissipation of 1 W and operates within an extended temperature range from -65°C to +175°C. Key electrical characteristics include a maximum reverse leakage current of 100 nA and a Zener impedance of 10 Ohms at a test current of 18 mA. The forward voltage is specified as 1.2 V at 200 mA.

Single Zener Diodes Feature Summary

• Provides precise voltage regulation with a tight ±2% tolerance on the 13 V Zener voltage.
• Capable of handling high power dissipation up to 1 W for robust performance.
• Engineered for extreme environmental conditions with an operating temperature range extending to +175°C.

Single Zener Diodes Applications

• Precision voltage reference circuits requiring low tolerance stability
• Overvoltage protection stages in industrial control systems
• Clamping applications in automotive electronics exposed to high temperatures

Single Zener Diodes Procurement Notes

Verify the specific suffix designation when ordering, as standard and tape-and-reel variants may exist. Confirm the package type matches the DO-213AB MELF specification. Ensure the required tolerance aligns with the ±2% rating provided in the datasheet. Check for RoHS compliance status if environmental regulations apply to the final assembly. Validate the manufacturer part number against official Microchip documentation to avoid substitution errors.

Single Zener Diodes Selection Notes

Select this component when a stable 13 V reference is needed with superior accuracy compared to standard 5% tolerance devices. The 1 W power rating allows for higher current handling than lower-power equivalents. The wide temperature range makes it suitable for harsh environments where standard silicon diodes might fail. Consider the small MELF footprint for space-constrained printed circuit board layouts.

Single Zener Diodes Part Context

This component belongs to the CDLL47xx series of Zener diodes produced by Microchip Technology. These devices are characterized by their glass passivation and hermetic sealing in the MELF format. The series offers various voltage options while maintaining consistent thermal and electrical performance standards across the product line.

Single Zener Diodes Replacement Considerations

Direct substitutes must match the 13 V Zener voltage, 1 W power rating, and ±2% tolerance. Verify that any replacement uses the DO-213AB package or an electrically equivalent form factor. Ensure the replacement device supports the same -65°C to +175°C operating temperature range.